The Government says it is "making every effort" to prevent class sizes increasing, despite an "unprecedented increase in pupil numbers".
A Department for Education spokesperson said £5 billion had been given to councils to spend on new school places over the course of this Parliament - prompting the creation of 260,000 new school places in shortage areas, "with more planned".
"We have also confirmed a further £2.35 billion to support councils to create the places needed by September 2017, and are allowing good schools to expand without the restrictions and bureaucracy they faced in the past."
The spokesperson added that children are only allowed to join classes of 30 or more in "exceptional cases", adding that the proportion of primary pupils in classes over 36 in size had fallen since the coalition took power.
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There will be a few showers in the north, but otherwise dry for many with warm sunny spells before heavier rain in the south west.
David Davis is hoping to push Brexit withdrawal talks towards discussions on a future trading relationship between the UK and EU.
A fine start to Sunday but rain moves in from the southwest later on.